package io;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;

public class CopyDemo4 {
    public static void main(String[] args) throws IOException {
        FileInputStream fis =new FileInputStream("homepage-popup-adv_6.jpg");
        FileOutputStream fos=new FileOutputStream("homepage.jpg");
        long start=System.currentTimeMillis();
        byte[] data=new byte[1024*10];
        int len;
        while ((len=fis.read(data))!=-1) {
            fos.write(data, 0, len);
        }
        long end=System.currentTimeMillis();
        System.out.println("复制完毕!耗时:"+(end-start)+"ms");
        fis.close();
        fos.close();
    }
}
